World Health Organization. Integrated management of childhood illness, Photographs. s.n.
Chicago-viite (17. p.)World Health Organization. Integrated Management of Childhood Illness, Photographs. s.l: s.n.
MLA-viite (9. p.)World Health Organization. Integrated Management of Childhood Illness, Photographs. s.n.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.